Read the following statements and select the incorrect one.
Little decomposition occurs during the formation of primary sludge
Formation of primary sludge requires ample aeration
Activated sludge possess flocs of decomposer microbes
Formation of activated sludge requires aeration.
Option 2) Formation of primary sludge requires ample aeration.
In wastewater treatment processes, primary sludge refers to the solid material that settles out during the primary sedimentation stage. This sludge primarily consists of heavier particles, such as organic matter, grit, and inorganic solids. The formation of primary sludge does not require ample aeration. Instead, it occurs through the physical settling process, where gravity causes the solid particles to separate and settle at the bottom of the sedimentation tank.